RT Book, Section
A1 Saw, Jacqueline
A1 Chandrasekhar, Jaya
A1 Zaman, Sarah
A1 Reynolds,  Harmony
A2 Fuster, Valentin
A2 Narula, Jagat
A2 Vaishnava, Prashant
A2 Leon, Martin B.
A2 Callans, David J.
A2 Rumsfeld, John S.
A2 Poppas, Athena
SR Print(0)
ID 1202444104
T1 Mimickers of Atherosclerotic Myocardial Infarction: SCAD, Coronary Vasospasm, Myocarditis, and Takotsubo Syndrome
T2 Fuster and Hurst's The Heart, 15e
YR 2022
FD 2022
PB McGraw-Hill Education
PP New York, NY
SN 9781264257560
LK accesscardiology.mhmedical.com/content.aspx?aid=1202444104
RD 2024/04/24
AB Chapter  SummaryThis  chapter  discusses  important  nonatherosclerotic  etiologies  of  myocardial  injury,  which  can  be  due  to  ischemic  or  nonischemic  causes  (see  Fuster  and  Hurst's  Central  Illustration).  Differentiating  the  etiology  of  myocardial  injury  is  critical  because  the  management  strategy  differs  for  atherosclerotic  versus  nonatherosclerotic  causes.  Type  1  myocardial  infarctions  (MIs)  are  due  to  atherosclerotic  plaque  rupture/erosion  with  thrombus  formation  and  typically  require  invasive  management  for  restoration  of  coronary  perfusion.  Type  2  MIs  can  result  from  ischemia  due  to  imbalance  of  oxygen  supply  and  demand,  or  nonatherosclerotic  causes  such  as  spontaneous  coronary  artery  dissection,  coronary  vasospasm,  coronary  embolism,  coronary  vasculitis,  coronary  ectasia,  and  anatomic  coronary  artery  anomaly.  Causes  of  nonischemic  myocardial  injury  include  myocarditis,  takotsubo  syndrome,  and  heart  failure.  The  management  of  type  2  MIs  and  nonischemic  causes  of  myocardial  injury  depends  on  the  underlying  etiology,  and  thus  discerning  these  “mimickers”  of  non-type  1  MI  is  pertinent  for  prompt  and  appropriate  management  of  acute  coronary  syndromes.